21233021131988 has 96 divisors (see below), whose sum is σ = 40186824437760. Its totient is φ = 9797834027520.

The previous prime is 21233021131967. The next prime is 21233021131991. The reversal of 21233021131988 is 88913112033212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40105583 + ... + 40631561.

It is an arithmetic number, because the mean of its divisors is an integer number (418612754560).

Almost surely, 2^{21233021131988} is an apocalyptic number.

It is an amenable number.

21233021131988 is a deficient number, since it is larger than the sum of its proper divisors (18953803305772).

21233021131988 is a wasteful number, since it uses less digits than its factorization.

21233021131988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526237 (or 526235 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 44.

The spelling of 21233021131988 in words is "twenty-one trillion, two hundred thirty-three billion, twenty-one million, one hundred thirty-one thousand, nine hundred eighty-eight".